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16.4 Threats To Biodiversity KEY CONCEPT The impact of a growing human population threatens biodiversity. 16.4 Threats To Biodiversity Preserving biodiversity is important to the future of the biosphere. • Why biodiversity is important: – loss of medical and technological advances – extinction of species – loss of ecosystem stability 16.4 Threats To Biodiversity Loss of habitat eliminates species. • Habitat fragmentation prevents an organism from accessing its entire home range. – occurs when a barrier forms within the habitat – often caused by human development 16.4 Threats To Biodiversity • Habitat corridors are a solution to the problem. – corridors can be road overpasses or underpasses – allow species to move between different areas of habitat 16.4 Threats To Biodiversity Introduced species can disrupt stable relationships in an ecosystem. • An introduced species is one that is brought to an ecosystem by humans. – accidental – purposeful • Invasive species can have an environmental and economic impact. 16.4 Threats To Biodiversity • Invasive species often push out native species. – Burmese python (Florida Everglades) 16.4 Threats To Biodiversity • Invasive species often push out native species. – mice (Australia) 16.4 Threats To Biodiversity • Invasive species often push out native species. – kudzu (southeastern United States)